import java.util.Scanner;

public class calBMI {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入体重/kg");
        float weight=scanner.nextFloat();
        System.out.println("请输入身高/m");
        float height=scanner.nextFloat();
        scanner.close();
        float BMI=weight/(height*height);
        if (BMI<18.5) {
            System.out.println("过轻");
        }
        else if(BMI<=25){
            System.out.println("正常");
        }
        else if(BMI<=28){
            System.out.println("过重");
        }
        else if(BMI<=32){
            System.out.println("肥胖");
        }
        else{
            System.out.println("非常肥胖");
        }
    }
}
